申请人:Fischer Walter
公开号:US20100234494A1
公开(公告)日:2010-09-16
A reversible thermochromic system comprising a) a compound of the formula (I) or a tautomer thereof (I) wherein R
1
is C
1
-C
18
alkyl, C
2
-C
18
alkenyl, C
3
-C
12
cycloalkyl, C
3
-C
12
cycloalkyl substituted by 1, 2 or 3 C
1
-C
4
alkyl; or C
7
-C
12
phenylalkyl; R
2
and R
3
are hydrogen or R
2
and R
3
together form a group —CH═CH—CH═CH—; and R
4
is hydrogen, —NO
2
, —SO
2
—R
1
or (4-nitrophenyl)azo; and b) a compound containing a group of the formula (II).
一个可逆热致变色系统,包括a)式(I)的化合物或其互变异构体(I),其中R1为C1-C18烷基,C2-C18烯基,C3-C12环烷基,C3-C12被1、2或3个C1-C4烷基取代的环烷基;或C7-C12苯基烷基;R2和R3为氢或R2和R3共同形成一个基团-CH═CH-CH═CH-;R4为氢,-NO2,-SO2-R1或(4-硝基苯基)偶氮基;和b)含有公式(II)基团的化合物。